Why Does My AC Keep Freezing Up?
A frozen indoor coil is a common problem that tends to repeat until the root cause is fixed. Ice on the coil blocks airflow and stops the system from cooling, even though the unit keeps running.
What Causes a Coil to Freeze
- A dirty air filter that restricts airflow.
- Low refrigerant from a leak.
- Blocked or closed supply vents.
- A dirty indoor coil.
- A weak blower motor.
Why It Repeats
Freezing is a symptom, not the root problem. If you simply melt the ice and restart the system without fixing the cause, the coil will freeze again. A professional diagnosis can find the underlying issue. See frozen AC coil.
What to Do
Turn the system off and let the ice melt. Check the filter and make sure all supply vents are open. If it freezes again, request service.
FAQs
Why does my AC keep freezing up?
Repeating freeze-ups usually point to low airflow or low refrigerant. The root cause needs to be found and fixed.
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